Work Productivity Loss from Depression: Evidence from an Employer Survey Kathryn M. Rost, PhD Research Professor, Department of Mental Health Law and Policy, College of Behavioral and Community Studies 13301 Bruce B. Downs Boulevard University of South Florida, Tampa FL 33612 Telephone: 850-282-9708, Fax: 813-974-4602, Email: kmrost@usf.edu Hongdao Meng, PhD Associate Professor, School of Aging Studies, College of Behavioral and Community Studies 13301 Bruce B. Downs Boulevard University of South Florida, Tampa FL 33612 Telephone: 813-974-5504, Fax: 813-974-5788, Email: meng@usf.edu Stanley Xu, PhD Head of Biostatistics, Institute for Health Research, Kaiser Permanente 10065 E. Harvard Avenue, Suite 300, Denver CO 80231 Associate Professor, Department of Biostatistics and Informatics, School of Public Health, University of Colorado Denver Telephone: 303-614-1300, Fax: 303-614-1382, Email: stanxu130@yahoo.com Corresponding Author: Kathryn Rost, PhD. Telephone: 850-383-9708, Fax: 813-974-4602, email: kmrost@usf.edu Study Design: cross-sectional comparison of three methods to estimate work productivity costs from depression